Chlorinated polyolefin resin composition

Patent metadata

Field	Value
Publication number	US-11518872-B2
Application number	US-201816493794-A
Country	US
Kind code	B2
Filing date	Mar 12, 2018
Priority date	Mar 17, 2017
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

An object is to provide a chlorinated polyolefin resin composition being superior in adhesion, solution stability, and chipping resistance. The chlorinated polyolefin resin composition contains a component (A): a polyolefin resin A having a melting point (Tm A ) obtained with a differential scanning calorimeter (DSC) in the range of 90 to 160° C., and a component (B): a polyolefin resin B having a melting point (Tm B ) obtained with a differential scanning calorimeter (DSC) in the range of 50 to 130° C., at least any one of the component (A) and the component (B), or a copolymer thereof being a chlorinated polyolefin resin (where |Tm A −Tm B |≥5° C.).

First claim

The invention claimed is:

1. A chlorinated polyolefin resin composition, comprising:
a component (A): a polyolefin resin A having a melting point (Tm A ) obtained with a differential scanning calorimeter (DSC) of 90 to 160° C., and
a component (B): a polyolefin resin B having a melting point (Tm B ) obtained with a differential scanning calorimeter (DSC) of 50 to 130° C.,
wherein at least one of the component (A) and the component (B), or a copolymer of the component (A) and the component (B) is a chlorinated polyolefin resin, where |Tm A −Tm B |≥5° C.;
wherein the component (B) is a propylene block copolymer comprising a propylene component and another α-olefin component, and the propylene copolymer comprises 60 mass % or more of propylene-derived constituent units; and
wherein the component (A) is a copolymer, and the component (A) comprises 60 mass % or more of propylene-derived constituent units.

2. The chlorinated polyolefin resin composition according to claim 1 ,
wherein at least one of the component (A) and the component (B), or the copolymer thereof is a graft-modified product of an α,β-unsaturated carboxylic acid or an anhydride thereof.

3. The chlorinated polyolefin resin composition according to claim 1 ,
wherein a content ratio of the component (A) and the component (B), represented by component (A)/component (B) is of 90/10 to 10/90, where component (A)+component (B)=100.

4. The chlorinated polyolefin resin composition according to claim 1 ,
wherein the copolymer of the component (A) and the component (B) is a chlorinated polyolefin resin.

5. The chlorinated polyolefin resin composition according to claim 1 , which has a chlorine content of 10 to 40 mass %.

6. The chlorinated polyolefin resin composition according to claim 1 , which has a weight-average molecular weight of 10,000 to 200,000.

7. A primer comprising the chlorinated polyolefin resin composition according to claim 1 .

8. An adhesive comprising the chlorinated polyolefin resin composition according to claim 1 .

9. A binder for coating comprising the chlorinated polyolefin resin composition according to claim 1 .

10. A binder for ink comprising the chlorinated polyolefin resin composition according to claim 1 .

11. The chlorinated polyolefin resin composition according to claim 1 , wherein a melt flow rate of the component (A) is 0.5-5 g/10 min, wherein the melt flow rate is measured with a measuring load of 2.16 kg and at a temperature of 230° C.

12. The chlorinated polyolefin resin composition according to claim 1 , wherein a melt flow rate of the component (B) is 5-40 g/10 min, wherein the melt flow rate is measured with a measuring load of 2.16 kg and at a temperature of 230° C.

13. The chlorinated polyolefin resin composition according to claim 1 , wherein the component (A) is a copolymer, and the component (A) comprises 60-99 mass % of propylene-derived constituent units.

14. The chlorinated polyolefin resin composition according to claim 1 , wherein the component (A) is a copolymer, and the copolymer comprises up to 5 mass % of butene-derived constituent units.

15. The chlorinated polyolefin resin composition according to claim 1 , wherein the component (B) is a block copolymer consisting of propylene and ethylene.

16. The chlorinated polyolefin resin composition according to claim 1 , wherein the polyolefin resin A has a melting point (Tm A ) obtained with a DSC of 100 to 140° C.

17. The chlorinated polyolefin resin composition according to claim 1 , wherein the polyolefin resin B has a melting point (Tm B ) obtained with a DSC of 55 to 120° C.

Assignees

• Jujo Paper Co Ltd

Inventors

• Kono Masaru
• Asai Kensuke
• Yoshimoto Takao
• Takenaka Takato
• Yada Minoru
• Komoto Naosuke

Classifications

• C08F8/46

  Reaction with unsaturated dicarboxylic acids or anhydrides thereof, e.g. maleinisation · CPC title

• C09D123/28

  by reaction with halogens or compounds containing halogen (C09D123/32 takes precedence) · CPC title

• C09J123/28

  by reaction with halogens or compounds containing halogen (C09J123/32 takes precedence) · CPC title

• C08F8/20

  Halogenation · CPC title

• C09J151/006

  grafted on to block copolymers containing at least one sequence of polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title